Locomotive-engineer&#39;s alarm.



IATBNTED SEPT. 11. 1906.

LMOCLINTOGK. LOCOMOTIVE BNGNEBRsALARM.

APPLXOATION FILED MAY 16. 1904.

2 SHEETS-SHEET l.

l am PATENTBD SEPT. 11, 190e E. MGGLINTOCK. LOGOMOTIVE ENGINEERS ALARM.

APPLIOATION FILED MAY 16.1904.

2 SHEETS-SHEET 2.

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EIVARD MCCLINTOCK, OF h/IICRRIAM PARK, MINNESOTA, ASSIGNOR TO 'HIEMCOLNTOCK MANUFACIURING COMPANY, OF ST. PAUL, MIN- NESOTA, A CORPORATIONOF MINNESOTA.

LOCOVIOTEVE-ENGINEERS ALARM.

Specification of Letters Patent.

Patented sept. 11, 1906.

Application tiled May 16, 1904. Serial No. 208.178.

fo nl] rellfoiu/ it 7111/1/ cm1/ecrit.-

Be it known that I, EnwAnn MctLrN'rocn, of 1Merriam Parli, Ramseycounty, Minnesota, have invented certain new and useful Improvements inLocomotive ,ltlngineers" Alarms, of which the following is aspecification.

M v invention relates to alarm mechanisms; and the object I have in viewis to simplify' and improve a mechanism shown and described in LettersPatent of the United States issued to me September S, 1902-3, No.738,465.

The invention consists generally in providing an indicating device inconnection with cach circuit lrvineaus of which theengineer candetermine at a glance whether the system is iu working order or not.

Further, the invention consists in providing an improvedpole-changingdevice, and, further, the invention consists in variousconstrtuiions and combinations, all as hercinafter described, andparticularly pointed out in the claims.

ln the accompan ving drawings, forming part of this specification,Figure l is a diagrannnatie view otI analarm s vsteni eiuhodying invinven ion. Fig. 2 is a. planviewof the electrical generators. Fig. 3 isa plan view of the pole-changing mechanism. Fig. t a longitmiinalsectional view ot' the same.

in the drawings l havcshown twoindepcndent pole changing circuits, whichl will designate as A and l, one connected with thel inaiu andauxiliar)Y rails on one side. of the track and the other with thecorresponding rails on the other side, and as each cir cuit is a` duplicate of thc other it will he sutlicicnt in this case to describe oneof them onl v, the t'rperation 'of both heilig substantially the saine.lhc importance of providing two independent circuits has heen fullydescribed inm v patent ahove referred to.

In Fig. 1, 2 represents the track-rails, and 3 the wheels of a truck'thereon. 4 and 5 are auxiliarv rails arranged parallel with the mainrails and insulated from them and from each other. 'lhcsc auxiliaryrails are divided into sections or blocks with alternating joints, asdescribed in my former patent, th rails on one side hoing in the Acircuit and the corresponding rails on the other side in thc B circuit.Trucks 6 and are arranged on these auxiliary rails, one for cach Apole-changing device is provided 5 5 circuit. in anvsuitahle place onthe locomotive, and consists of a shaft 8, mounted in bearings t) andprovided at a point intermediate to its ends with a sheave 1t). Theshaft is provided on each side of thc sheave with a polc- 6o Changingdevice, one for each circuit, and as these devices are similar inconstruction and operation I will deserlhe the one used in the circuitind' ating the parts by referencetigurcs with the exponent ^a," and thecorre- 65 spondiug `parts in the other pole-changing device with theaddition of theexponentmb.

ln Fig. 4, il is an insulating-corel loosely mounted on the shaftSandhavingheads122l and 13 secured to said core and sc )aratedA o fromconmmtalor-plates 14 and 15 h v insulating-disks ltk 'lheahutting endsof tho plates M and l5 are recessed and coincide with each other and areseparated h v an insulating strip ]T. cured ou the sheave it) and hearupon the, spool-head 13' with sutlicient pressure to drive the spoolwhen the .shaft and sheave are revolved. rFhehead ]2is provided in itsperiphcr)Y with a series of teeth t9, that are 8o adapted to receive apin 2(),which locks the spool against revolution. A toggle linkmechanism 2l" is connected with the pin 20 and to the armature 2j!" of asolenoid 23.

A spring 24" normally holds the armature 85 with a pair of brushes 2Sand 29a and 30 95 and 231, The hrushcs 2t?" and 30a arc arranged tohear. respectively, at all times upon the plates ist" and t5", whilelthe hrushcs 28 and J. alternate in contacting with said plates. andtlms etl'ect a reversal in roo the direction of travel in the current torender the system effective regardless of thc direction of movement ofthc locomotives.

A wire 32u connects the brush 30 with the truck 3, and a similar wire 33leads from the 1o 5 brush 3,1LL to one pole of a generator '34,

Springs 1S are se- 75 B v pressing this ker they engineer 9o sheave 10,and the other pole of from the lamps to a Wire throughthe magnetsn'ioinrted on a shaft 35, that ii-S driven, preferably, by asteam-turbine 36 and is provided with a pulley 37, with which thesheave10 is connected bye suitable belt, (N ot shown in Fie. 17.),

prefer to provide a'speed-reduning device consist g of pulleys 38 and39, connected by belts' land 41 with the pulley 37 and the the generator34a is connected by a wire a2 with the brush 28a. A similar generator isprovided on the other end of the shaft 35, which is located in the othercircuit and is designated by reference-numeral 34h. f

The brush. 29a is connected by a wire 43a with electromagnets 44a and45a and from ,thence passes to a telegraph-key 46a and to the truck 6.The ma niet 45a is provided with an armature 47a, connected by a wire48a with a red lamp 495. A wire 50a leads 51, that is connected to onepole of a generatoif` 52*l on the shaft 85. The wire 51a. is alsoconnected to one post of a bell 53a, and the other post is connected bya wire 54 with the armature 47a. A wire 55a leads from the other pole of.the generator 52"L to a contact-peint in the path of the armature 47a.

When the magnets 45 armature will be attracted and close the circuitthrough the red light 49E and the alarmbell 53a. The solenoid 23a isconnected by Wires 56 and 57a with the wires 51E and 54a, andconsequently when the circuit is closed 45a the solenoid willbeenergized to attract its armature, project the pin 25, and lock thepole-changer of the circuitA against further revolution. The m agnets44a have an armature 58 connected with a White light 59a by a wire 60?,and a wire 61 leads from the said light to the wire 51a. A wire 62aleads from the wire 55a to a contact-point in the path of the armature58, and a resistance-coil 63 is provided between the auxiliary rail 4and the contiguous main-track rail 2. This resistance-coil closes thecircuit between the rails and establishes a continuous current throughthe magnets 44a and `45a and theI conductors connected therewith. I haveshwn the resistance-coil located between the main and auxiliary rails;but it may be placed 'at any other suitable point in the circuit. Themagrets have a differential wiiidirg, and while the currentpassing-'from one rail to the other through thcresistance-coil issufficient to energize the magnets 44li and attract their armature andclose the circuit through the white lilrht 59a it is not sullicientlystrong to energize the magnets 45 and attract their armature. One ofthese resistance-coils is placed in each block, ardit follows that asthe magnets 44a will be energized continuously and thecircuit be closedthrough them at all times the riante light 59a will burn all the time,whether are energized.,- the l the train is in motion or not, and willindicate to the engineer that the system is in working ,y order. lnthisspecification l designate the white light as the good-order circuit andthe red light as the alarm-circuit.

The pole-changer circuit is connected with the rails and through theclosers 44EL and-45aL with an independent source of electrical en ergy.The good-order and alarm circuits are connected, respectively, with theclosers 44a and 45a and with a source of electrical energy. Thealarm-circuit through the closer 45 will be normally broken, owing tothe fact, as above noted, that the current normally passing through theresistance is ini suflicieiit to energize the magnets of the lsaidcloser, and'coiisequently the red light will remain dark. As soon,however, as another locomotive enters the block moving in the saine oropposite direction the pole-changer circuits in the two locomotives willbe conL y nected in series through the resistance orthe resistance beingshunted or cut out temporarily through the locomotive from the main tothe auxiliary rails. This temporaryuniting of the two pole-ehangercircuits will roduce a sufficient increase in the electrica en`- ergy toenergize the magnets in one of the alarm-circuits and attract one of thearmatures 47*1L or 47h, according to whether the locomotives are Thewhite light burning continuously will indicate to the engineer whetherthe system is in working order or not as thc train passes over the trackfrom block to block, and whenover the red light flashes and thealarm-bell 'rings he will'know that another train-is in the same block,and the engineer of that train will receive a similar warning. Theclosing of thel reddight circuit will cause the polechanger to bevlocked automatically, and while the engineer is using the telegraph-keyand signaling the engineer oi the he can prevent the pole-changer fromrevolving by operating the key provided for that purpose. I

I prefer in this mechanism to provide means for continuously operatingthe pole changer, and in that respect this mechanism differs from myformer patent above referred to and also in providing the white light orgood-order signal, which does not appear in said patent.

have shown and described my invention as used in connection tive; but itobviously may be employed with any style or type of motor operating on atrack and driven by any suitable power.

.l claim as my invention- 1.- The combination, with the main-trackrails, ol auxiliary rails divided into blocks 'or sections, a suitableresistance interposed between th-e main and auxiliary rails, goodor ider and alarm circuits having suitable closmoving in the same or oppo-'site direction, and closirg the alarm-circuit.

other train ICO IIO

with a railway-locomoers, one Circui 'having a greater rosislanrr vicespruvizlml in sail irvuiis. a 'nulo-changer circuit, and a snnrcr nl'olia-li'ical @nrrg'y ram-- 11m-lod will saiil irl-nits. v

2. Tin winliinalinn n'il'n lli@ iiu1in-lra fl rails. of auxiliar)vrails. a suilalilr rrsislanrn iniorl'wsm'l lnilu'rc ',aiil inaiu andauxiliaryv Tails. a 'li'lxitr--li 'niin-nriln viruuit, a,

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saiil .nr

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liu main-track rails, nl auxiliary rails livuliai-inl'n insnla lil 1iflsnrsfwfinns, a suilalilf rsisanrn cuiry 'ili ilamain azul aux'ran'yrali, wliilwlig'lil nr rflir' rxirlfuilJ and rwfbliglil nr alarn'`riz-ruit, said .Ylii" lifrl Circuit living' nnrxnallv rlusiul whilelli-'rx rw light virruit nnrnialljv ninfa, a pnlr-rliaingrr, and a snurwnl' ilm'ra-al anrl-'li' ronnnrtwl with saiil (firiuils.

L "illnl ('mnliinalion. willi tlm inain--lrai-l; rails, nl' auxiliarirails lliriilml inl'n insularil blocks ni' srrtinns) a suilaliliri'sislanrn iut01`- pnsnll lmtu'min ilu" :nain ainl auxiliar) railsoirarli svzliilnra u'liilii-lijgjlii nl' gnmlairlirr" cirruiiMiavingsuilalili cl\i:-'1\rs,:i. rial-light nr alarm rirruit als) having'-niri'ixi-i'lnsirs` ilu forium' rirruil living' nnrniallj' i-lnsvli nyiii"` passalfunl'iliiw'urrrnl ilirnulrii 1ai lrnsi -ian fv triral unrrgycnnnaaiiril wili sairl riri'urs.

5. Tlir rnniliinalinir wiili die inain-trark rails` nl auxiliar)Y railsrlivillnil inl() insulaiiil llnfflis wliusu rails on nuff sixllf lap luym' in' air joinis willi llu inrrrsnlmilling rails nu llaVl otlur sieli,:i suiabli r 'anuA inliirpnsvil lmtiu'vr-n ll'w niain-lrain' rails` anill-lic (funliguous :uliiiarj: rails nl vari: so 'linn, Wliitclilrlil` ur""nmlairriia" virruil's, roll-lig'lu, ir alarm rin-nils lavinfg agrralor rrsisanvn than saifl \\liil10lif rlil circuits, apnln-rlnnifrlr, and a source ni electrical cnorg'y runnOrlml will; saiilCircuits. i

i5. Til@ winliinaimi, Yviti the main-trank rails, nl a ronfluctnrrnnijgunus 'Llurutn and (lii'idull into insulalril soi-lions orlilnclrs, a resistance mnnnvring said inain-l'racli rails anil 'rlwlilnrks nl' said cnmluctnr, a wlnt lig'lil' circuit" normali;Y Clnsml,:L rNl-lig'lil in' alarm rin-uil nnrniallx' unan. a. snurri nlvlecltriral un fr v l'nr sa' rirruiis, :nul moans fin' rinsing lillalai'iurn'rnil niinn tlm approach nl ann nr ninna' inn'. in tlir saineor oppiisiln(lirmliinn.

T. 'liv vnlnliinaliun. willi illu i'nain-tracli rails, nl'f'niulurli-,is liviilrfl inln insular-@rl lilorks ni' sia-lions lliailai) l l\' ni' ln' ali joints willi cai-li Olin-r, a suilalvli`rn.-'islancc in circuit 'with saifl 1min-track rails ami tlm blocks nlgaiil conductors, whiln--liglub or goml-orlar Circuits nnrnmlly clnsml,rml-light or alarm circuiis normally open; and a source of nlictricalenergy for said, circu its.

ln a levier nl tl'ie class Llcsffribul, the z'lunbinatinn7 willi arqvnlving shaft, olf-a;

slnfaiwsecured llirrcon, spools lnoselymouutfmi im sairl slia'r'iuminear-li sidenf :mill shear/"Q, snrings ssvcin'cfl mi said shear@ andarrangsd l laar upon lli@ contiguous lwarls of Suid spunk,ruininnlutnnplates prnvirlml on Said. spnnla and insnlatcrl from uiclinllir and l'rnin s ill lnanls, ln'uslns for sai l wl'ilates, and moanslor rrinpnrarily lurking said spools agi-ainsi row'i'iluiion. K

il. Flin combination, with the main-truck r s nl @unduclm's,- a suitableresistance in .-ilcuil with said tr: clisrziils and the contiguouswinrlnclnr, white-light or god-ordc'r cirmiiis normallyv closed,red-light 0r alarm circuits having a circuit-closer and normally linnn,a umitinnonsly-uperating pole-changer, mrrzlianisrn 'for 'temporarilylocking said polelia er 'when the circuit is closed through niil'nr ofsaiil alarm-circuits; and. a source of rlrffl'rical minrg'y lor iidrirnuits.

iii. 'llin cmnliinatiun, with the main-track rails nl :i

l rnuduvtur, a rnsislancn connecting .saiil :nairracli rails and saidconductor, a (anniinuuusl \'-l urning wllitwliglit or goodnril fr f'irruibe a rail-light or alarm circuit normally' nnen and having' asuitable circuit rinsing' inricra a polwclianger in circuit with.

iliv rails, `saiil conductor and said circuit-*closing llm'iru. and lia'sairl rirruils.

l l. 'inn rninljinal'ion, with the nalin-track rails, nl" i-nnilucinrs,a suitable resistance in rii'rui willi lili@ rails and said coniluctorson 'ra/l1 siilil nl illu track, whillhliglitor goodnilzi'" ciriuiisnnrinally rloseil, red-light or alarm rircuils nnrinallyupon and havingSuitalilr` clnsiz's, nuans in cin-uit with Said rails anil saiilalarina'ircuit clnsvrs for closing said alarin-rii'cuits uiinn lli@approaclrol another nuilxor nur-ring in lli;x sinn@y or uppositedirecliiuu, :nul snurnus nl' @lustri 'Tal energy for said rirruils lXl2. A, lrain-ala`rin rinnpi'ising good-0rllor" riri'uii having asignal, an alar1n-Circuit alsn having' a signal and a ciiciiit-clos0r,the l'nrnnr circuit lining' nnrnially rloserl and the snurcvs ol'vclntrical energy latini' normally ninn, a pole-changer in ciri cnil willi tiln rails :nul said closer, a, source of rlzcirival energy lor saulmrcults, the current normally passing: lln'nug'li said alarm-circuitJ`lia-inf; insnlliifnnr ln npvrite sind closer and Yroo means, good'orleraridalarmoircuits having signalsy the former normally closed and thelatter being norma y open, and sources of electrical energy' for saidcircuits, the alarm-cirot ciment being insuiicient norl mally toclosesaid alarm-circuit until augmentaal by a similar current .on anapproaching train.

14. 'The oombinantiori, with a track-Circuit having a. pole-changer, ofgood-order and alam circuits having signals, said good-ordercircuit-being normally closed and said alarm circuit normally open,

' said trao'kfoirouit, and sources of eleetrioal asuitable resistanceprovided in Y a suitable 'resistance in l @amaai ircuits, and sources ofelectrical energy for said circuits, substantially as described.

16. Theeombination, with the track-oirouite having a pole-reversingmeans, of goodorder and alarm circuits arranged in pairs upon each sideof the track, said good-order circuits being normally closed and saidalarn1- circuits normally operi, and sources of electrical energy forsaid circuits.

i7. The combination, with a. traol-ciroiiit having iraiiroarriedpole-reversing means, oia good-order and alarm circuits having siiials,said good-order circuit being normally closed and Sairlalarm-oiro'uitriormally open, and sources of electrical energy for Saidoircuiter in witness Afhereof l have hereunto set my.

hand this 9th (lay orn May, 1904.

EDWARD MCCLINTOCK. in presence of- Riolman PAUL, M. i'.iiioaarr.

